Umluj 시간을 Howick 시간으로 변환
18:23:40
-1
17:23:40
+7
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+3.5
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+2.5
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+2.5
+2.5
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+2.5
+2.5
+2.5
+2.5
+2.5
+2
+2
+1.5
+1
+0.5
+0
+0
+0
+0
+0
+0
+0
+0
+0
-1
-1
-1
-1
-2
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-2
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-2
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-6
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